Skew detection and correction

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ganesh
ganesh le 5 Déc 2013
Commenté : oza san le 28 Mar 2017
I hane a binary image that contains a headerline. I want to skew image so that header line will be in horozontal direction.
  2 commentaires
Image Analyst
Image Analyst le 6 Déc 2013
Please attach your image so we can recommend an approach.
oza san
oza san le 28 Mar 2017
i have an image like below and i want to detect and correct the skew can you help me sir?

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Réponses (2)

Image Analyst
Image Analyst le 5 Déc 2013
So find the line, then call imtransform to remove the shear (skew).
  1 commentaire
Alex Taylor
Alex Taylor le 6 Déc 2013
Modifié(e) : Alex Taylor le 6 Déc 2013
Image Analyst's answer is on the money. However, I would use imwarp and affine2d instead of imtransform/maketform. The use of imtransform is no longer recommended.

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Alex Taylor
Alex Taylor le 6 Déc 2013
Modifié(e) : John Kelly le 27 Fév 2015
I do actually have one clarification from the tags. Do you really mean skew/shear, or do you actually mean rotation?
If you only need to rotate the header line out of view, it will be easier to just use the imrotate function (assuming you have the Image Processing Toolbox).

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